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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.16 No.1
- 발행연도
- 2023.3
- 수록면
- 53 - 72 (20page)
- DOI
- 10.5293/IJFMS.2023.16.1.053
이용수
초록· 키워드
오류제보하기
To provide stable operation over a wide flow range, centrifugal pumps should have high pump efficiency at a low flow rates and high total head. A new impeller with radial and annular flow channels that has higher pumping performance than conventional design impellers with the same specific speed and flow rate at a low specific speed was proposed. however, a high unsteady flow was observed inside the pump. In this study, to predict performance and clarify internal flow accurately, unsteady CFD was used to investigate pump performance and internal flow, including different hydraulic losses when the impeller rotates once rotation. The results show that pump performance can be estimated more accurately using unsteady CFD than using steady CFD. Moreover, the constant drop in total head with flow rate is owing to the hydraulic losses in the impeller, which exclude friction, growing in proportion to flow rate.
목차
Abstract
1. Introduction
2. Analysis Target and CFD Analysis Method
3. Loss Analysis Method Based on Unsteady CFD Results
4. Results and Discussion
5. Conclusion
References
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